shedrick



March 8, 1932, E. G. SHEDRICK 1,848,503

SHEET LATHING I Filed Oct. 27, 1928 a2 a? e2 m @2 ea a gig/$1??? WW fi gig/Q fi Qmw daomwq Patented Mar. 8, i932 UNIEE ERVIN G. SHEDRICK, OF MANCHESTER, PENNSYLVANIA SHEET LATHING Application filed October 27, 1928.

This invention relates to lathing, and more particularly to sheet lat-hing adapted to be shipped and sold in rolled form.

An important object of the invention is to provide a novel form of'sheet lathing having outstanding projections adapted to interlock with the plaster or other material, the body of the lathing, aside from the projections referred to, being substantially con '10 tinuous to produce'an article of material strength and one which readily may be applied. V I

A further object is to provide a lathing of the character referred to which is adapted to be cheaply manufactured of light readily handled material, and which possesses a material degree of strength to properly reinforce the plaster or other material applied thereto.

39 A further object isto provide asheet lathing of the character referred to which has projections formed 'ontheouter face there of for engagement with the plaster or other material, the projections acting as gages to permit the plaster to be uniformly applied, and as means for reinforcing the sheet to render it'substantially rigid.

' A further object is to provide a sheet'lathing having projections of the character re- 39 ferred to, and being further provided with punched out portions forming pockets adapted to receive the plaster whereby the latter may be tightly interlocked with the lathing.

A further object is to provide a lathing of the character referred to which possesses a material degree of flexibility in one direction to permit it to be manufactured in relatively long sheets and to be rolled to facilitate handling and shipment.

A further object is to provide a lathing which is flexible in one direction for the purpose referred to and substantially inflexible in the opposite direction to facilitate the stretching thereof into a flat plane and thus facilitate its proper application to the studding or other supports to which it is to be attached.

A further object is to provide a composite lathing formed of a pair of superimposed 56 sheets one'of which is provided with means Serial No. 315,471.

on its outer face adapted to interlock with vthe plaster, while the other sheet is adapted to prevent the passageof moisture through the lathing. A further object is to provide a sheet lath-- mg made up of a sheet of metal and a backing sheet of waterproof material, the metal sheet being provided with punched out portions forming pockets to receive plaster or similar material whereby the latter will interlock with the metal sheet, the waterproof material forming a closure for the pockets and preventing the passage of moisture through the lathing.

A further object is to provide a sheet lathing of the character referred to which is flexible and is adapted to receive plaster or similar material applied to the outside face thereof, such outside face being provided with ribs adapted to reinforce the lathing and to interlock with the plaster, and being adapted to serve the additional function of reinforcing the corner portion of a plaster Wall to prevent injury to the plaster at that point.

()ther objects and advantages of the invention will become apparent during the course of the following description.

In the drawings I have shown several embodiments of the invention. In this showing,

Figure 1 is a face view of a portion of a sheet of lathing,

Figure 2 is a vertical sectional View through the same showing the plaster applied,

Figure 3 is a fragmentary perspective view showing the rear face of the lathing, and, Figure 4 is a detail sectional view of a modified form of lathing.

Referring to Figures 1, 2 and 3, the numeral 1O designates a sheet forming the body of the lathing, and preferably made of light gage sheet. The body of the lathing is provided with preferably parallel outstanding ribs 11,. the sides of which preferably contact witn each other whereby the body of the sheet 10 substantially continuous. The ribs 11 are preferably inclined with respect to the body of the sheet 10, as clearly indicated in Figure 2.

The sheet 10 is provided between the ribs 11 with punched out portions 12 which form 1 the sheet.

or similar material 141- is shown appliecl against the face ofthe sheet; Zlt willibe ap-cparent that the plaster is interlocked with the ribs 11 and the punched out portions the sheet, the plaster, when applied, being forced into the pockets 13 asshown in Figure 2. c c

sheet of Waterproofs-d material 15 is arranged against the back of the sheet 10. This material may be formed of paper impregnatedwith waterproofing material such as tar, pitch, creosote or the likefand the waterpro'o fingsheet is preferably secured against the sheet '10by a layer of adhesive 16. 7 It has been foundthat the paper or other waterproofedbacki ng'may be secured to the sheet 10 to form a composite sheet which is sub,- stantially rigid longitudinally of 'the ribs ll, but which possesses a substantial degree of flexibility transversely of. ribs whereby the sheetimay be rolled in'thelatterdirection without loosening the backing 15 from the g body of thesheetr .Thus it willbe apparent filed April th,. .1928.

that. the finished lathing may be shipped in rolled form, and readily may be nnrolled to ding,oriother supports.

- permit it to be arranged-fiat against thestudends of ithefribsll adjacent one end of thesheet are preferably cut transversely as at 17, and the iportionsof the ribs :18 lying between the cuts 17and the adjacent endsof sheet are rolled downwardly fiat against the body of the sheet whereby the sheets are adapted to be overlapped when placed in p0- sition to eliminate the cracking of theplaster at the joints between the sheets of lathing.

The body of the lathing shown in Figure 1 is identical with that previously -described and need notvbe referred to in. detaih In the modified form of lathing, a sheet of material 19 isvemployed which is heavily impre nated.

with waterproofing material of an ac hesive nature. For example, heavily tar-red paper may be employed, and; the paper may ibe caused to adheredirectly to the metal sheet by applying it theretowitlr heat and pressure.

to Theoperation of the lathing is as follows:

.The sheet 10 is adapted'to be manufactured with an apparatus sinrilar to thatdisclosed in my copending applicationSerial No. 271,556, g The vribs 1 1 and punched out portions-1 2 am formed in the body ofithe sheet, and as previously stated, the sides of the ribs preferably lie against each other wherebythe body of the sheet '10 issubstantial'ly continuous and unbroken. It

pockets to prevent the plaster from being wasted by being forced from the opposite side-of the sheet through the pockets 13. It

will be apparent that as the plaster is applied against the sheet, the contact of the plaster with. the sheet 115 causes the plaster to spread transversely to fill the pockets Brand. thus become firmly interlocked with thesheet,

The lathing maybe applied with theribs horizontally arranged as shown inFigures 1 and 2, or the ribs may be vertically arranged ifdesiredQ When the ribs are arr angedihori zontally and the sheet is applied to vertical studding, the studding reinforces the sheet vertically while the ribs '1l.render thesheet T101161 horizontally. It isthe present practice to reinforce the corners ofplastered'wallswith metal inserts embedded into the plaster and having edge portions flush therewith to prevent the corners: of the plaster from being chipped 0H. Therfl'ex'ibility o'fth-e sheet forming the subject matter of'the present inventionfis'such that at the corners of walls, the

ribs may be arranged vertically with one rib coinciding with. the corner, whereupon the sheetimay bebent and the rib-'I'I-at the corner of thewa-ll will act as a metal rein-forcing element to' prevent the plaster atthe corner of the wall. from beingchipped 'ofi;

Thelribsll are identical, and each has its edgegportion arranged parallel to the body of the sheet 10'. Thus the ribs are adapted to act as. thickness gages to permit the plaster to be uniformly applied against the sheet. The end portions 18 offthe ribs are rolled fiat against thebody of the sheet to permit overlapping of the sheets, and thus cracking of the plaster between the sheets wine-e eliminated. V V r I In operation, the form of thelathing shown in Fii ure 4 is identical with that previously described, this form of the invention merely being provided with an adhesive backing sheet instead of having a layer of adhesive appliedbetween the sheets. .A sheet offla'thing constructed in accordance with either form of the invention readily may be rolled transversely'of theribsill, the rolling action taking place withoutinjury to the ribs 11 or punched .out portionsvl2, and without causing separation between the metal sheet .and the backing sheet. Thus handling and shipment of the latching is greatly facilitated.

.As previously stated, thesheet 10 is pref erably made of very light gagesheet metal,

and the finished sheets of lathing are thus light and easily handled. It also will be apparent that an ordinary pair of tin snips may be employed for cutting the sheets wherever necessary, and accordingly the application of the lathing is greatly facilitated.

It will be apparent that the backing of water-proof material protects the metal sheet against the action of moisture, and accordingly the deterioration of the metal sheet by rusting is prevented. It also will be apparent that the provision of the backing sheet prevents the wasting of mortar which otherwise would occur through the forcing of excess mortar through the apertures in the metal sheet. The backing sheet serves the additional function of deadening the metal sheet against vibration. thus assisting in providing a sound proof wall. It also will be noted that the waterproof sheet acts as an insulating covering for the metal thus tending to avoid radio disturbances. The invention thus includes all of the essential characteristics of a perfect lathing structure.

It is to be understood that the forms of the invention herewith shown and described are to be taken as preferred examples of the same and that various changes in the shape, size and arrangement of parts may be restorted to without departing from the spirit of the invention or the scope of the subjoined claims.

I claim 1. A sheet of lathing comprising a normally flat imperforate layer of waterproof material and a coextensive perforate sheet attached thereto by adhesion, said perforate sheet having portions adapted to be embedded in a layer of plastic material applied thereto.

2. A sheet of lathing comprising a normal 1y flat imperforate layer of waterproof material, and a second layer of material 00- extensive therewith and applied thereto and provided with punched out openings forming projections adapted to be embedded in a layer of plastic material applied against said second layer of material.

3. A sheet of lathing comprising a normally flat imperforate layer of waterproof material. and second layer of material coextensive therewith and applied thereto and pro vided with punched out portions forming with said waterproof material a plurality of pockets adapted to receive some of a layer of plastic material applied to said second layer of material.

4. A sheet of lathing comprising a relatively large sheet of material having punched out portions extending from one side thereof forming openings therein, and a layer of material coextensive with and fixed against the opposite side of said sheet of material, said layer of material being normally fiat and imperforate and forming with said openings a plurality of pockets adapted to receive some broken, said sheet of metal being provided with punched out portions forming openings between said ribs, and a normally flat layer of imperforate waterproof material coextensive with and fixed against the opposite side of said sheet of metal.

In testimony whereof I affix my signature.

ERVIN Gr. SHEDR-IGK. 

